A 49-year-old woman complains of irregular menses over the past 6 months, feelings of inadequacy, vaginal dryness, difficulty sleeping, and episodes of warmth and sweating at night. On examination, her blood pressure is 120/68 mm Hg, heart rate is 90 beats per minute, and temperature is 99°F (37.2°C). Her thyroid gland is normal to palpation. The cardiac and lung examinations are unremarkable.

The breasts are symmetric, without masses or discharge. Examination of the external genitalia does not reveal any masses. Source: Case Files - Obstetrics Gynecology *This case is from Docplexus editorial team for educative purpose only What is the most likely diagnosis?